
<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="最终发布"/>
    </el-steps>

<el-button type="text" @click="openChapterDialog()">添加章节</el-button>
    <el-tree
      ref="tree2"
      :data="chapterVideoList"
      :props="defaultProps"
      default-expand-all
      :expand-on-click-node="false" >
	  <span class="custom-tree-node" slot-scope="{ node, data }">
        <span>{{ node.label }}</span>
        <span>
          <!-- v-if="node.isLeaf" -->
		     <el-button
         v-if="data.children"
            type="text"
            size="mini"
            @click="openVideo(data)"
            >
            添加小节
          </el-button>
          <el-button
            type="text"
            size="mini"
             @click="openEdit(data)" >
            编辑
          </el-button>
          <el-button
            type="text"
            size="mini"
            @click="remove(data)">
            删除
          </el-button>
        </span>
      </span>
    </el-tree>

    
    <div>
        <el-button @click="previous">上一步</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>
    </div>

    <!-- 添加和修改章节表单 -->
    <el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">
        <el-form :model="chapter" label-width="120px">
            <el-form-item label="章节标题">
                <el-input v-model="chapter.title"/>
            </el-form-item>
            <el-form-item label="章节排序">
                <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>
            </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
            <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
        </div>
    </el-dialog>

    <!-- 添加和修改课时表单 -->
<el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
  <el-form :model="video" label-width="120px">
    <el-form-item label="课时标题">
      <el-input v-model="video.title"/>
    </el-form-item>
    <el-form-item label="课时排序">
      <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
    </el-form-item>
    <el-form-item label="是否免费">
      <el-radio-group v-model="video.free">
        <el-radio :label="true">免费</el-radio>
        <el-radio :label="false">默认</el-radio>
      </el-radio-group>
    </el-form-item>
    <el-form-item label="上传视频">
      <!-- TODO -->
      <el-upload

         :on-success="handleVodUploadSuccess"

         :on-remove="handleVodRemove"

         :before-remove="beforeVodRemove"

         :on-exceed="handleUploadExceed"

         :file-list="fileList"

         :action="BASE_API+'/eduvod/video/upload'"

         :limit="1"

         class="upload-demo">

  <el-button size="small" type="primary">上传视频</el-button>

  <el-tooltip placement="right-end">

      <div slot="content">最大支持1G，<br>

          支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>

          GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>

          MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>

          SWF、TS、VOB、WMV、WEBM 等视频格式上传</div>

      <i class="el-icon-question"/>

  </el-tooltip>

  </el-upload>
    </el-form-item>
  </el-form>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
    <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
  </div>
</el-dialog>

  </div>
</template>
<script>
import chapter from '@/api/edu/chapter'
import video from '@/api/edu/video'
export default {
    data() {
        return {
            saveBtnDisabled:false,
            courseId:'',//课程id
            chapterVideoList:[],
            chapter:{ //封装章节数据
                title: '',
                sort: 0
            },
            video: {
                title: '',
                sort: 0,
                free: 0,
                videoSourceId: '',
                videoOriginalName: ''
            },
            filterText: '',
            defaultProps: {
            children: 'children',
            label: 'title'
            },
            dialogChapterFormVisible:false,//章节弹框
            dialogVideoFormVisible:false, //小节弹框
            fileList: [],//上传文件列表
          BASE_API: process.env.BASE_API // 接口API地址
            
        }
    },
    created(){
        if (this.$route.params && this.$route.params.id){
            this.courseId=this.$route.params.id
            this.chapter.courseId=this.$route.params.id
            this.video.courseId=this.$route.params.id
            this.getChapterList()
        }
    },
    watch: {
    filterText(val) {
      this.$refs.tree2.filter(val)
    }
    },
    methods:{
      handleVodRemove(){
        video.deleteAlyVod(this.video.videoSourceId).then(response=>{
          this.$message({
          type: 'success',
          message: '删除视频成功'             
          })
          this.fileList=[]
          this.video.videoSourceId = ''
        this.video.videoOriginalName=''
        })
        },
      beforeVodRemove(file,fileList){
        return this.$confirm(`确定移除 ${ file.name }？`);
      },
      //成功回调
      handleVodUploadSuccess(response, file, fileList) {

        this.video.videoSourceId = response.data.videoId
        this.video.videoOriginalName=file.name
        //console.log(this.video.videoSourceId)

      },

      //视图上传多于一个视频

      handleUploadExceed(files, fileList) {

        this.$message.warning('想要重新上传视频，请先删除已上传的视频')

      },
        remove(data){
        if(data.children){
          this.deleteChapter(data.id)
        }else{
          this.deleteVideo(data.id)
        }
        
      },
      openEdit(data){
        //console.log(data)
        if(data.children){
          this.getChapter(data.id)
       
        }else{
          this.getVideo(data.id)
        }
        
      },
      //打开添加小节的dialog
      openVideo(data){
       //console.log(data)
        this.dialogVideoFormVisible=true
        this.video.chapterId=data.id
        this.video.title='',
        this.video.id=''
         this.video.sort=0,
         this.video.free=0,
         this.video.videoSourceId=''
         this.video.videoOriginalName=''
         this.fileList=[]
      },
      saveOrUpdateVideo(){
        if(!this.video.id){
          this.addVideo()
        }else{
          this.updateVideo()
        }
      },
      addVideo(){
        video.addVideo(this.video).then(response=>{
         this.dialogVideoFormVisible=false
          this.$message({
          type: 'success',
          message: '添加小节信息成功'             
          })
          this.getChapterList()    
        })
      },
      getVideo(id){
        video.getVideo(id).then(response=>{
          this.dialogVideoFormVisible=true
        this.video=response.data.video
        console.log(this.video.videoSourceId)
        })
      },
      updateVideo(){
        video.updateVideo(this.video).then(response=>{
         this.dialogVideoFormVisible=false
          this.$message({
          type: 'success',
          message: '修改小节信息成功'             
          })
          this.getChapterList()    
        
        })
      },
       deleteVideo(id){
        this.$confirm('此操作将永久删除该小节, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {
                return video.deleteVideo(id)
            }).then(() => {
                this.getChapterList()
                this.$message({
                    type: 'success',
                    message: '删除成功!'
                })

            })
      },
     //==============================章节操作==================================== 
      openChapterDialog(){
        this.dialogChapterFormVisible=true
        this.chapter.title= '',
              this.chapter.sort=0
      },    
      deleteChapter(id){
        this.$confirm('此操作将永久删除该章节, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {
                return chapter.deleteChapter(id)
            }).then(() => {
                this.getChapterList()
                this.$message({
                    type: 'success',
                    message: '删除成功!'
                })

            })
      },
      getChapter(id){
          chapter.getChapter(id).then(response=>{
          this.chapter=response.data.chapter
          this.dialogChapterFormVisible=true
       })
      },
      addChapter(){
        chapter.addChapter(this.chapter).then(response=>{
          //this.chapter.id=response.data.id
          //console.log(this.chapter.id)
          this.dialogChapterFormVisible=false
          this.$message({
          type: 'success',
          message: '添加章节信息成功'             
          })
          this.getChapterList()         
        })
      },
      updateChapter(){
        chapter.updateChapter(this.chapter).then(response=>{
          this.chapter.id=response.data.id
          this.dialogChapterFormVisible=false
          this.$message({
          type: 'success',
          message: '修改章节信息成功'             
          })
          this.getChapterList() 
        })
      },

      saveOrUpdate(){
        if(!this.chapter.id){
          this.addChapter()
        }else{
          this.updateChapter()
        }
      },
      getChapterList(){
            chapter.getChapterList(this.courseId).then(response=>{
                this.chapterVideoList=response.data.chapterVoList
                //console.log(this.chapterVideoList)
        
            })
        },
        previous(){
            this.$router.push({path:'/course/info/'+this.courseId})
        },
        next(){
            this.$router.push({path:'/course/publish/'+this.courseId})
        },
        filterNode(value, data) {
      if (!value) return true
      return data.title.toLowerCase().indexOf(value.toLowerCase()) !== -1
      }
    }
}
</script>
<style scoped>
.chanpterList{
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}
.chanpterList li{
  position: relative;
}
.chanpterList p{
  float: left;
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #DDD;
}
.chanpterList .acts {
    float: right;
    font-size: 14px;
}

.videoList{
  padding-left: 50px;
}
.videoList p{
  float: left;
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #DDD;
}

</style>